Card.associate_to_customer(customer) fails

[quangkcao]

When I call: MYCARD.associate_to_customer(customer)
It fails to save when adding new attribute 'links' to Card object as indicated in resources.py:

class FundingInstrument(Resource):
...
    def associate_to_customer(self, customer):
        try:
            self.links
        except AttributeError:
            self.links = {}
        self.links['customer'] = utils.extract_href_from_object(customer)
        self.save()

In fact, at the end of saving process, MYCARD got a new attribute called 'customer_href' instead of 'links' that I expected. Next, I fetch MYCARD again to see its response, but neither 'links' nor 'customer_href' is on MYCARD. However, the number of cards associated with the customer increases by one.

I'd appreciate any help.
Thanks!

[mjallday]

@quangkcao what happens when you run this script?

If that works then the issue may be in your code, can you show us your code? I suspect that maybe you're not saving the card before associating the user to it?

[quangkcao]

It happens when I create a new card.
First, in client side, using balance.js to tokenize the card and submit it to the server.
Second, in server side, using 2 lines of code likes below

my_card = balanced.Card.fetch(request.POST.get('balancedCreditCardURI'))
my_card.associate_to_customer(customer)

After run this code, the result is the issue I already pointed above.

Beside, is the card created when it's tokenized? That's way when I fetch for the card uri, the card data is already there.

[mjallday]

@quangkcao sorry, I don't understand the actual problem you're having. It sounds like it is associating the card to the customer correctly. What can you not do after that?

[quangkcao]

@mjallday Can you please confirm that in this scenario of associating the card with the user, this card will have a new 'links' attribute which is a result after running associate_to_customer (). Much appreciate it.

[mjallday]

That's an internal implementation of the client. I would not look at that.

import balanced
balanced.configure('ak-test-1kvvievk0Qqw5wQPsrlM9g7wQwNe62cyc')

card = balanced.Card(
   expiration_month='12',
   security_code='123',
   number='5105105105105100',
   expiration_year='2020'
).save()
customer = balanced.Customer().save()
card.associate_to_customer(customer)
# customer has a cards collection associated, there is one card in the collection
customer.cards.count()  # 1
# the card and the card associated to the customer have the same id because they are the same
card.id  #  'CCJsik7G89Qo6kDG5V0E1gm'
customer.cards.first().id  # 'CCJsik7G89Qo6kDG5V0E1gm'

[quangkcao]

Thanks @mjallday. But how do I know who is the card associated with if I only have the card data?

[mjallday]

card.customer will give you the customer if there is one.

[quangkcao]

Great! Thank you.